Add navabi to OWNERS for android buildbot code.

BUG=
TBR=cmp@chromium.org

Review URL: https://codereview.chromium.org/23856013

git-svn-id: http://src.chromium.org/svn/trunk/src/build@224403 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

android/buildbot/OWNERS

@@ -3,3 +3,4 @@ set noparent
 cmp@chromium.org
 ilevy@chromium.org
 yfriedman@chromium.org
+navabi@chromium.org